WO2009106996A3 - Systèmes d’imagerie à profondeur de champ étendue et lentille unique - Google Patents

Systèmes d’imagerie à profondeur de champ étendue et lentille unique Download PDF

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Publication number
WO2009106996A3
WO2009106996A3 PCT/IB2009/005383 IB2009005383W WO2009106996A3 WO 2009106996 A3 WO2009106996 A3 WO 2009106996A3 IB 2009005383 W IB2009005383 W IB 2009005383W WO 2009106996 A3 WO2009106996 A3 WO 2009106996A3
Authority
WO
WIPO (PCT)
Prior art keywords
single lens
imaging system
extended depth
raw
lens element
Prior art date
Application number
PCT/IB2009/005383
Other languages
English (en)
Other versions
WO2009106996A2 (fr
Inventor
Gilles Mathieu
Original Assignee
Global Bionic Optics, Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/IB2008/001304 external-priority patent/WO2008122888A2/fr
Application filed by Global Bionic Optics, Pty Ltd filed Critical Global Bionic Optics, Pty Ltd
Priority to CN2009801092173A priority Critical patent/CN101978304A/zh
Priority to CA2716608A priority patent/CA2716608C/fr
Priority to US12/735,872 priority patent/US8488044B2/en
Priority to JP2010548210A priority patent/JP2011518341A/ja
Priority to AU2009219814A priority patent/AU2009219814A1/en
Publication of WO2009106996A2 publication Critical patent/WO2009106996A2/fr
Publication of WO2009106996A3 publication Critical patent/WO2009106996A3/fr
Priority to IL207789A priority patent/IL207789A0/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/189—Structurally combined with optical elements not having diffractive power
    • G02B5/1895—Structurally combined with optical elements not having diffractive power such optical elements having dioptric power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/20—Soft-focus objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0075—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. increasing, the depth of field or depth of focus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/18—Eye characteristics, e.g. of the iris
    • G06V40/19—Sensors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Lenses (AREA)

Abstract

La présente invention concerne un système d’imagerie à profondeur de champ étendue (EDOF) (10) qui présente une profondeur focale étendue (EDOF’) correspondante. Le système d’imagerie comporte un système optique (20) consistant en un élément à lentille unique (22) et en un diaphragme (D) dirigé vers l’objet, disposé sensiblement en une position axiale sans coma. L’élément à lentille unique est conçu de sorte que le système optique comporte une quantité sélectionnée d’aberrations sphériques (SA) dans la plage de 0,2 λ ≤ SA ≤ 2 λ, où λ est une longueur d’onde d’imagerie. Le système d’imagerie comporte un capteur d’images (30) permettant de former une image (IM) brute numérisée d’un objet (OB). Dans des applications, l’image brute peut être utilisée directement. Le système d’imagerie comporte également une unité de traitement d’images (54) conçue pour traiter les images brutes afin de former des images à amélioration de contraste. Le traitement d’images comprend la formation d’une fonction de transfert de modulation (MTF) améliorée à l’aide d’une fonction de gain (G) appliquée à la MTF « brute ». Des modes de réalisation de l’élément à lentille unique comprennent au moins une caractéristique de diffraction (23) afin de réduire l’aberration chromatique. Des éléments à lentille unique présentant au moins une surface asphérique (S1, S2 ou S1 et S2) sont également décrits.
PCT/IB2009/005383 2008-02-29 2009-02-17 Systèmes d’imagerie à profondeur de champ étendue et lentille unique WO2009106996A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN2009801092173A CN101978304A (zh) 2008-02-29 2009-02-17 被扩大景深的单透镜成像系统
CA2716608A CA2716608C (fr) 2008-02-29 2009-02-17 Systemes d'imagerie a profondeur de champ etendue et lentille unique
US12/735,872 US8488044B2 (en) 2008-02-29 2009-02-17 Single-lens extended depth-of-field imaging systems
JP2010548210A JP2011518341A (ja) 2008-02-29 2009-02-17 単一レンズの拡張被写界深度の撮像システム
AU2009219814A AU2009219814A1 (en) 2008-02-29 2009-02-17 Single-lens extended depth-of-field imaging systems
IL207789A IL207789A0 (en) 2008-02-29 2010-08-24 Single-lens extended depth-of-field imaging systems

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IBPCT/IB2008/001304 2008-02-29
PCT/IB2008/001304 WO2008122888A2 (fr) 2007-04-06 2008-02-29 Système d'imagerie à grande profondeur de champ et système de reconnaissance de l'iris
EP08305927.9 2008-12-12
EP08305927A EP2096483A1 (fr) 2008-02-29 2008-12-12 Systèmes d'imagerie à lentille unique à profondeur de champ étendue

Publications (2)

Publication Number Publication Date
WO2009106996A2 WO2009106996A2 (fr) 2009-09-03
WO2009106996A3 true WO2009106996A3 (fr) 2009-10-22

Family

ID=40941311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/005383 WO2009106996A2 (fr) 2008-02-29 2009-02-17 Systèmes d’imagerie à profondeur de champ étendue et lentille unique

Country Status (2)

Country Link
EP (1) EP2096483A1 (fr)
WO (1) WO2009106996A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8248511B2 (en) * 2009-09-30 2012-08-21 Ricoh Co., Ltd. Dual-mode extended depth-of-field imaging systems
CN102221746B (zh) * 2010-04-15 2014-01-22 财团法人工业技术研究院 景深扩展的投影系统及影像处理方法
US8416334B2 (en) 2010-04-27 2013-04-09 Fm-Assets Pty Ltd. Thick single-lens extended depth-of-field imaging systems
EP2693249A4 (fr) * 2011-03-31 2014-06-25 Fujifilm Corp Système optique à allongement focal et système d'imagerie edof
FR2994735B1 (fr) 2012-08-22 2014-08-01 Onera (Off Nat Aerospatiale) Procede et dispositif d'imagerie telemetrique
US10932882B2 (en) 2015-03-09 2021-03-02 Synaptive Medical (Barbados) Inc. Surgical camera system with automatic alternation between two depths of field
US10212366B2 (en) * 2016-06-17 2019-02-19 Fotonation Limited Iris image acquisition system
US10429271B2 (en) 2016-07-01 2019-10-01 Microsoft Technology Licensing, Llc Camera testing using reverse projection
CA3057162C (fr) 2016-12-01 2024-02-06 Synaptive Medical (Barbados) Inc. Systeme d'appareil photo permettant de fournir des images avec une resolution elevee et une grande profondeur de champ simultanees
WO2023113193A1 (fr) * 2021-12-15 2023-06-22 Samsung Electronics Co., Ltd. Dispositif et procédé d'imagerie à profondeur de champ étendue
CN115359105B (zh) * 2022-08-01 2023-08-11 荣耀终端有限公司 景深扩展图像生成方法、设备及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021188A1 (fr) * 1995-12-04 1997-06-12 David Sarnoff Research Center, Inc. Systeme et procede de reconnaissance a champ de vision grand angulaire et petit angulaire
US20060050409A1 (en) * 2004-09-03 2006-03-09 Automatic Recognition & Control, Inc. Extended depth of field using a multi-focal length lens with a controlled range of spherical aberration and a centrally obscured aperture
EP1978394A1 (fr) * 2007-04-06 2008-10-08 Global Bionic Optics Pty Ltd. Système optique pour l'augmentation de la profondeur de champ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7215493B2 (en) * 2005-01-27 2007-05-08 Psc Scanning, Inc. Imaging system with a lens having increased light collection efficiency and a deblurring equalizer
US7224540B2 (en) * 2005-01-31 2007-05-29 Datalogic Scanning, Inc. Extended depth of field imaging system using chromatic aberration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021188A1 (fr) * 1995-12-04 1997-06-12 David Sarnoff Research Center, Inc. Systeme et procede de reconnaissance a champ de vision grand angulaire et petit angulaire
US20060050409A1 (en) * 2004-09-03 2006-03-09 Automatic Recognition & Control, Inc. Extended depth of field using a multi-focal length lens with a controlled range of spherical aberration and a centrally obscured aperture
EP1978394A1 (fr) * 2007-04-06 2008-10-08 Global Bionic Optics Pty Ltd. Système optique pour l'augmentation de la profondeur de champ

Also Published As

Publication number Publication date
WO2009106996A2 (fr) 2009-09-03
EP2096483A1 (fr) 2009-09-02

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